Efect of reed burning and precipitation on the breeding success of Great Reed Warbler, Acrocephalus arundinaceus, on a mining pond
Efect of reed burning and precipitation on the breeding success of Great Reed Warbler, Acrocephalus arundinaceus, on a mining pond
In this study, we present the efects of reed burning and precipitation on the breeding success of Great Reed Warblers on amining pond (2008 2011). Breeding success, i.e. the probability that an egg would produce a fedgling, was 0.43. Clutch survival waslowest in 2010, due to the precipitation and high water level during the season. Breeding success was higher in the second half of thebreeding season, although in 2008 and 2011 precipitation was also higher in the second half than in the frst half of the breeding season.During the frst half of the breeding season, daily egg and nestling survival did not difer. However, in the second half of the breedingseason, daily egg survival was higher than daily chick survival. In years when reed was burned, breeding density varied between 7.7and 12.3 pairs ha 1 , which was not signifcantly lower than in years when reed was not managed (average: 13.2 pairs ha 1). Despite theavailability of fresh reed in large areas, birds placed their nests mainly in mixed reed stands. Breeding success in fresh and mixed reeddid not difer. Generally, breeding success and density were not afected by reed burning, but water level afected breeding success anddensity.
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